Lishu in context: Street-network sprawl trends

Lishu in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
LishuJilin (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lishu plotted against Jilin and China. The SNDi of new construction in Lishu peaked in 1991-2005, compared to Jilin which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Lishu's incremental SNDi fell from 2.67 to 1.07 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lishu ranked 9th out of 47 cities in Jilin and 161st out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
1.07
Rank in China
16th of 1843
Rank in Jilin
1st of 47

Entire Network (Aggregate)

SNDi value
1.87
Rank in China
161st of 1843
Rank in Jilin
9th of 47

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
LishuChallakereBodinayakkanur

In new street additions, Lishu and Challakere both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Bodinayakkanur fluctuated in its street-construction patterns. For the full network, Lishu and Challakere both grew more disconnected from 1975 through 1991-2005, then improved, while Bodinayakkanur became progressively more disconnected. Notably, Lishu had a more sprawly network than Challakere in 1975 but the two have since reversed their relative ranking.